Apparatus for presetting lathe tools and the like



Feb. 9,1926.` 1,571,944`

E. F. HEARD ET Al. y APPARATUS FOR PREsETTING LATHE TooLs AND THE'LIKE Filed Nov. l0. 1924 Y l' 7AM @am "7k/5W ATTORNEYS INVENRS. Y

Patented Feb. 9, 1926.

UNITED STATES` j 1,571,944 PATENT OFFICE.

EDMUND F. HEARD, ELIZABETH` CITY COUNTY, AND MAYO M.' FITZ HUGH, OF NEWPORT NEWS, .VIRGINA, ASSIGNORSTO NEXVPORT NEWS SHIPBUILDING & DRYDOCK COMPANY, NEWPORT NEWS, VIRGINIA, A'CORI-'ORATION OF 'VIR- GINIA.

, APPARATS FOR PRESETTING LATI-IE TOOLS AND THE LIKE.

Appiicatin sie@ November 1o, i924. serial No. 748,944.

T0 all 407mm t may concern:

Be it known that we, EDMUND F. HEARD and MAYO M. Fi'rZ HUGH, citizens ofthe United States, residing, respectively, in the county of Elizabeth City and State of Virginia, and the city ofNewport News, county of Warwick, and State of Virginia, have invented certain new and useful Improvements in Apparatus for Presetting Lathey Tools and the like, of which the following is a full,clear, and complete description.

Our invention relates to apparatus for presetting lathe tools and the like, and has for its object the provision of a simple, accurate and eflicient device of this character. More particularly, it relates to a setting-up gauge, jig or fixture to facilitate the setting-up of gang tools for use in a lathe, Amilling machine or boring machine to turn or form axles, shafts, bars and the like. y Another object of our invention is to permit a tool block to be` fitted with its group of turning Vor forining tools all in their proper relation to each, other and to the r centerof the lathe, boring mill or milling machine in which the axle, shaft or the like is being turned or formed. The blocks, with the tools preset therein, may then be *trans-l ferred from our pi'esetting device to the latlieas a single unit, thus saving the productive time of lathes that 'would otherwise be requiredin setting each individual tool or cutterdirectly in the tool block while attached to the lathe.

Our invention will be better understood from the followingl description taken in connection with the accompanying drawings and its scope will be pointed out in the appended claims.

In the drawings illustrating our invention;V

Fig. 1 is an end view of our presetting i device with a tool block thereon.

Said arms 2, 3, respectively support centers 4, 5, for rotatably supporting a shaft 6 which carries a teinplet or gauge 7 suitably secured thereto. The templet 7 is provided with indentations 7 or projections 7 into which or against which the forming, cutting or turning tools may be set. The center 4 is preferably fixed in arm 2. Center 3 is made movable axially so that shaft 6, with its temple-tor gauge, may be readily removed for the substitution of other templets. or gauges.\ This arrangement also permits adjustment to reduce the axial movement of shaft 6 to a minimum while permitting it to rotate freely. In the form shown in Fig. 2, the center pin 5 is slidable axially in arm 3 and its rear end is pivotally connected to a handle 8 by a pin 9, which is slidable in a longitudinal slot 9 in thehandle 8, said handle being pivoted to arm 3 at 10.` Thus, the center 5 isfmoved back and forth axially byrmoving the handle 8 about its pivot 10. The center 5 may be secured in any desired position by means of screw 11. In the modification shown in Fig. 4, the rear end of center pin 5 is threaded at 12 to engagein suitable threads inv arm 3, or threaded collar 13 inserted therein, and maybe adjusted by means of the hand wheel 14 suitably xed thereon.

The bed 1 is provided with a suitable tool holder seat 15,parallel to the line of centers 4 and 5. In the present case, this seat is shown as of the dove-tailed or undercut type, adapted to receive the tool holder 16, and in practice corresponds to the tool holder seat of the lathe. "The surface 17 is a'predetermine-d distance from and parallel with the line between centers 4 and 5. The tool vholder 16 is placed in the seat 15 as shown in Fig. 1 and a liner 18 is inserted adjacent the surface 17 tofacilitate the positioning of the tool holder on'its seat. The liner 1S is in width equal to or slightly less than the horizontaldistance ybetween the downwardly projecting'iib on the lower surface of the tool holder and the surface 17. Thus, when placing the tool holder on its seat, the tool holder is loweredstraight down and pulled back until the dove-tailed surfaces engage, when liner 18 may be inserted end-wise.v and the dove-tails locked by tightening the screws 19 in a manner readily understood.

Tool holder 1G is then locked to the seat hy a bolt "0` hinged to the hed at 2l. In this manner, the tool holder 1G is secured in a presetting device in a position nith respect to centers Ti, 5," corresponding to the position et the tool holder' in the lathe with respect to the lathe centers. The tools Q2 may then he positioned with respect to the teinplet 7 and secured in the usual inanner, after which the tool holder, with its tools properlyY positioned may he transferred to the lathe tor use, when desired.

ldlhen our invention is used with a lathe using douhle tool hloclis or holders 'for proriding; a ihult'iplieity ot :'sliapes, or to ronehen and` tiiiish the saine shape, shaft t3 may arry a plliralit'y of tennpulets. Initterns or `narines, as indicated at'v 17", so that various eoi'nlbinatiohs oi' tool shapes and arrangeinents or hot'h may he set up without relnovingr shalt, (i troni the jig' or presetter.

Frein a consideration ol the ahore description, taken in connection with the dranx ings. our invention Will he apparent Without further eiplanatioh, `and the advantages set forth prior to the detailed description will readily be recognized. lVe do not Wish to be understood as being liinitcd to the details of forni er arrangement of parts herein set jl'orth, for var-ions changes may be lnade hy those skilled in the art Without departing from the spirit or scope ot our invention.

that we claiin and desire to secure by United States Letters Patentis: t l. Apparatus for pilesetting tools for lathes and the like ceinprisiiir centers similar to lathe centers, a grange snpported thereby and ineans for supporting' a tool block in fixed relation `with respect to said lirst mentioned centers and in a position corresponding to that of the tool block ivhen on the lathe with respect to the lathe centers. l f

irpparatus torpresetting tools for lathes and the like coinprising ineans haring centers siniilar to lathe centers adapted to support gauges, a gauge supported thereby and means for reinorably supporti'ng` tool holders in a l'ixed lpredeterniined relation with re speci' to said centers, said gauge being` adaptharness;

ed to permit a tool held by said holder to he properlyr positioned ttor suliscqueht use.

2l. nl device ot the character described eoniprising a hed haring.;l centers supported thereon, a ,gauge rotatably supported 1n said centers, and a tool holder seat on said bed arranged to support a tool holder parallel with the line of said reuters and a n'edeterinii'icd distance therefrom.`

l-. fr device ot the character described coniprising a bed havin g' centers supported thereon, a ganse supported h y said centers and a tool holder seat on said hed haring1 a dore tail slot and a straieght surtaee parallel with and a-pi'edeternnned distance troni the centerline ot said centers. and means 'tor securina a tool holder on said seat in said slot.

5'. device ot lthe character described c`oinprisinp; a hed, a tired and an adjustable center siipp'orted thereon` a range rotatahiyY supported on said centers, and a Atool holder seat on said bed arranged to s'np'port a tool holder parllel with the line ot said centers and a predetermined distance therel'roin.

jr device ol the character described co1nprisingi` a held, 'centers corresponding to lathe renters supported thereon, a gauge supported by said centers, niieans :tor adjusting' one 'oi said centers axially, a tool holder seat on said lied arranged to support a tool holder with iespectto the line oit' said centers in a position eorrtaspondinig' to the position. o t the holder when on the lathe and means for locking a tool holder on said seat, said gauge being' adapted to permit the ypositioning ot' a tool in said tool holder lor subsequent use.

i'. fr device of the character described conr prising a bed, centers corresponding to lathe centers carried thereby, a gauge rotatably supported on said centers, ineans tor adjusting one oi' said centers axially, a tool holder seat, on said hed arranged to support a tool holder with respect to the line ol said een ters in a position corri-ispo]iding to the position ot the holder Awhen on the lathe and means l'or locking,l a tool holder on said seat.

inniono n. nenni), Maro n. rrrz HUGH.

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